Description

2-[2-[(2,4-Dimethoxyphenyl)Amino]Vinyl]-1,3,3-Trimethyl-3H-Indolium Hydrogen Sulphate is a specialized cationic dye intermediate and a key precursor for synthesizing polymethine cyanine dyes. This compound matters for its role in producing dyes with excellent photosensitivity and fluorescence properties, which are critical for advanced imaging and diagnostic applications. It is primarily needed by manufacturers in the photochemical, analytical reagent, and life science research sectors for applications ranging from photographic sensitizers to biological staining.

Application

• Cyanine Dye Synthesis: A crucial precursor for manufacturing polymethine cyanine dyes used in fluorescence labeling and bioimaging.
• Photographic Sensitizers: Used in the formulation of silver halide photographic emulsions to enhance spectral sensitivity.
• Analytical Reagents: Serves as a key component in the development of colorimetric and fluorometric assays and sensors.
• Laser Dyes & Optical Materials: Employed in the research and production of tunable dye lasers and non-linear optical materials.
• Biological Staining: Used in histology and cell biology for staining tissues and cellular components, often after further chemical modification.
• Research & Development: A valuable building block in organic synthesis for academic and industrial R&D focused on novel functional dyes.

Basic Information

Product Name	2-[2-[(2,4-Dimethoxyphenyl)Amino]Vinyl]-1,3,3-Trimethyl-3H-Indolium Hydrogen Sulphate
CAS No.	59737-31-4
Molecular Formula	C21H26N2O6S
Molecular Weight	434.51 g/mol
Synonyms	2-[2-[(2,4-Dimethoxyphenyl)amino]ethenyl]-1,3,3-trimethyl-3H-indolium hydrogen sulfate; 1,3,3-Trimethyl-2-[2-[(2,4-dimethoxyphenyl)amino]vinyl]-3H-indolium hydrogen sulfate; Astrazon Orange R Base; Basic Orange 21 (unsalted base); C.I. 48035; C.I. Basic Orange 21; 3H-Indolium, 2-[2-[(2,4-dimethoxyphenyl)amino]ethenyl]-1,3,3-trimethyl-, sulfate (1:1)
EINECS	Contact for details

Quality Control

Our production of 2-[2-[(2,4-Dimethoxyphenyl)Amino]Vinyl]-1,3,3-Trimethyl-3H-Indolium Hydrogen Sulphate adheres to stringent quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via IR and NMR spectroscopy, to ensure compliance with precise specifications. Certificates of Analysis (COA) documenting all critical quality attributes are available upon request to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept sealed to minimize exposure to atmospheric humidity. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	Orange to red-brown crystalline powder
Identification (IR)	Conforms to structure
Purity (HPLC)	≥ 98.0%
Loss on Drying	≤ 2.0%
Residue on Ignition (Sulfated Ash)	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.